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Johns Hopkins Applied Physics Laboratory

Not-for-profit UARC delivering national security research

Intermediate Systems Administrator

System AdministrationPosted on Nov 9
Full-timeLaurel, MD, USA$100k - $195k /yr

About the Job

Requirements

  • Have an Associate's or Technical degree with 5+ years of relevant experience in Computer Science, Information Technology, or a related field.
  • Demonstrate success in roles requiring both responsive technical support and proactive system administration.
  • Have proficiency in Windows and/or Linux system administration, including user management through Active Directory or equivalent and Group Policy configuration.
  • Have hands-on experience with cloud or virtualization technologies such as AWS, Azure, VMware, Hyper-V, or QEMU, and network troubleshooting.
  • Be familiar with security practices, including deploying patches, configuring firewalls, and applying Security Technical Implementation Guide standards as per JSIG or NISPOM guidance.
  • Have experience with certificate management (PKI, RSA, and Windows/Linux certificate services) and security tools such as ACAS, SCAP, Splunk, Ivanti, or McAfee.
  • Hold a current DoD 8140 Systems Administration certification, such as Security+, SSCP, or CISSP-ISSE.
  • Have a Top Secret level security clearance by the start date and be able to ultimately obtain TS/SCI clearance; eligibility requires U.S. citizenship.
  • Be subject to a government security clearance investigation and meet requirements for access to classified information.

Responsibilities

  • Provide intermediate system administration service, maintenance, and support for Linux, Windows, virtualization, storage devices, and systems in highly classified environments.
  • Maintain and document systems using approved architectures and baselines.
  • Troubleshoot intermediate issues in Linux and Windows operating systems.
  • Support virtualized environments, including virtual machine monitoring, troubleshooting, and routine maintenance using commercial off-the-shelf software.
  • Perform system backups, recovery activities, and scheduled continuity testing to protect data availability and integrity.
  • Troubleshoot and administer storage devices, including capacity monitoring, backups, and routine troubleshooting.
  • Perform basic network switch troubleshooting, including ports, VLANs, connectivity, and segmentation, in coordination with senior systems administrators.
  • Create and manage user and privileged accounts, access permissions, passwords, and periodic access reviews.
  • Apply patches, remediate findings, and maintain approved configuration baselines of IT technology.
  • Monitor system health, capacity, availability, and security status; respond to alerts and document corrective actions.
  • Support RMF and authorization activities by maintaining configuration records, procedures, diagrams, control evidence, and other assigned security documentation.
  • Apply cybersecurity, OPSEC, COMSEC, and classified-environment requirements during daily system administration.
  • Maintain technical documentation, SOPs, system records, and ticket updates in the approved IT service management system.
  • Assist with system upgrades, migrations, technology refreshes, testing, and operational transitions under senior technical direction.
  • Maintain current knowledge of applicable technologies, vulnerabilities, security requirements, and system administration practices.

Desired Qualifications

  • Have cloud certifications or equivalent platform-specific credentials.
  • Have a Bachelor's degree and 8+ years of professional experience in Computer Science, Information Technology, or a related field.
  • Be certified for multiple technologies, cloud, or virtualization software.
  • Have NetApp or SAN experience.
  • Have experience manually building physical systems.
  • Have configured managed switches.
  • Have experience with endpoint protection applications such as Splunk.
  • Have practical experience with programming or scripting languages.
  • Have working familiarity with Director of Central Intelligence Directives or Intelligence Community Directives security requirements.
  • Have experience with HP Secure Print.

About the Company

Johns Hopkins Applied Physics Laboratory

Not-for-profit UARC delivering national security research

Johns Hopkins Applied Physics Laboratory (APL) is a not-for-profit university-affiliated research center that provides solutions to complex national security and scientific challenges through technical expertise, prototyping, research and development, and analysis. It uses engineering, simulations, and studies to design prototypes and deliver analyses that support government and partner organizations. Unlike many commercial firms, APL operates as a non-profit affiliated with Johns Hopkins and focuses on mission-oriented research rather than selling finished products. Its goal is to provide practical, thoroughly tested solutions to public-sector customers by performing research, developing prototypes, and offering expert analysis.

Company size
5,001-10,000
Company stage
Not listed
Total funding
Not listed
Headquarters
United States
Founded
1942

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